BPI Antibody (971526) [Unconjugated]

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Western blot shows lysates of Human bone marrow and human spleen tissue. PVDF membrane was probed with 2 µg/mL of Mouse Anti-Human BPI Monoclonal Antibody (Catalog # MAB74681) followed by HRP-conjugated ...read more
HL-60 human acute promyelocytic leukemia cell line was stained with Mouse Anti-Human BPI Monoclonal Antibody (Catalog # MAB74681, filled histogram) or isotype control antibody (Catalog # MAB0041, open histogram), ...read more
BPI was detected in immersion fixed paraffin-embedded sections of human tonsil using Mouse Anti-Human BPI Monoclonal Antibody (Catalog # MAB74681) at 5 µg/mL for 1 hour at room temperature followed by ...read more

Product Details

Summary
Reactivity HuSpecies Glossary
Applications WB, IHC, Flow
Clone
971526
Clonality
Monoclonal
Host
Mouse
Conjugate
Unconjugated

Order Details

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Catalog# & Formulation Size Price

BPI Antibody (971526) [Unconjugated] Summary

Immunogen
Human embryonic kidney cell line HEK-293-derived transfected with human BPI
Val32-Lys487
Accession # P17213
Specificity
Detects human BPI in direct ELISAs.
Source
N/A
Isotype
IgG2b
Clonality
Monoclonal
Host
Mouse
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Western Blot 2 ug/mL
  • Immunohistochemistry 5-25 ug/mL
  • Intracellular Staining by Flow Cytometry 0.25 ug/10^6 cells

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Reconstitution Instructions
Reconstitute at 0.5 mg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for BPI Antibody (971526) [Unconjugated]

  • bactericidal permeability-increasing protein
  • bactericidal/permeability-increasing protein
  • BPI
  • BPIFD1
  • CAP 57
  • rBPI

Background

Bactericidal/Permeability Increasing protein (BPI) is a 55 kDa antibacterial glycoprotein that plays a role in innate immunity (1, 2). It belongs to the lipid transfer protein family that also includes LPS binding protein (LBP), cholesteryl ester transfer protein (CETP), and phospholipid transfer protein (PLTP). Circulating levels of BPI are positively correlated with the levels of cholesterol, LDL cholesterol, and HDL cholesterol (3). Mature human BPI shares approximately 55% amino acid (aa) sequence identity with mouse and rat BPI. It can be seceted as a monomer or as a disulfide‑linked homodimer (4). It consists of a highly basic N‑terminal and a hydrophobic C‑terminal domain (5). Its N‑terminal domain confers the ability of BPI to bind bacterial lipopolysaccharide (LPS) found in the cell walls of Gram negative bacteria and to induce the lysis and phagocytosis of these bacteria (6‑9). It also blocks the endothelial cell response to endotoxin (10). BPI is stored in neutrophil and eosinophil granules for induced secretion during inflammation (11, 12). It is additionally expressed in mucosal epithelia and testis (10, 13). BPI can be retained on the surface of both neutrophils and epithelial cells, presumably by its hydrophobic C‑terminal domain (8, 10). BPI also functions as an anti-angiogenic molecule by inhibiting vascular endothelial cell proliferation and tubule formation (14). Like the antibacterial actions, this function is mediated by the N‑terminal region (15).
  1. Schultz, H. and J.P. Weiss (2007) Clin. Chim. Acta 384:12.
  2. Holweg, A. et al. (2011) Biochem. Soc. Trans. 39:1045.
  3. Esteve, E. et al. (2010) Thromb. Haemost. 103:780.
  4. Horwitz, A.H. et al. (1996) Protein Exp. Purif. 8:28.
  5. Gray, P.W. et al. (1989) J. Biol. Chem. 264:9505.
  6. Ooi, C.E. et al. (1987) J. Biol. Chem. 262:14891.
  7. Tobias, P.S. et al. (1997) J. Biol. Chem. 272:18682.
  8. Weersink, A.J. et al. (1993) J. Immunol. 150:253.
  9. Nishimura, H. et al. (2001) Immunology 103:519.
  10. Canny, G. et al. (2002) Proc. Natl. Acad. Sci. 99:3902.
  11. Weiss, J. and I. Olsson (1987) Blood 69:652.
  12. Calafat, J. et al. (1998) Blood 91:4770.
  13. Lennartsson, A. et al. (2005) J. Leukoc. Biol. 77:369.
  14. van der Schaft, D.W.J. et al. (2000) Blood 96:176.
  15. Rauniyar, R.K. et al. (2002) Invest. Ophthalmol. Vis. Sci. 43:503.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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